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Overview
The Birkinbine Engineering Company got its start through Henry P. M. Birkinbine. His son, John, gained early engineering experience through various water supply projects in and around Philadelphia; this experience later helped direct the Birkinbine Engineering Company’s involvement in many water-related projects around the country in the late 19th century as part of the improved public sanitation initiatives. The Birkinbine firm also specialized in mining engineering, both in the United States...

Overview
The Lehigh Coal and Navigation Company was a prominent coal mining and shipping company first established in 1820 with the merger of the Lehigh Coal Mining Company and the Lehigh Navigation Company, both of which operated in the Lehigh Valley area of Pennsylvania beginning in 1818. The Company owned and operated an extensive system of coalmines in Pennsylvania’s Carbon and Schuylkill Counties, two canals, and several railroads and railways. The Lehigh Coal and Navigation Company is credited...